Headset



FIG. 1 is a perspective view of the headset;

FIG. 2 is a front view of the headset;

FIG. 3 is a rear view of the headset;

FIG. 4 is a left side view of the headset;

FIG. 5 is a right side view of the headset;

FIG. 6 is a top side view of the headset; and,

FIG. 7 is a bottom view of the headset.

The broken lines in the drawings are for purposes of illustration and form no part of the claimed design. 

CLAIM The ornamental design for a headset, as shown and described. 